Comment 2 for bug 914982

StacktraceTop:
 create_store_key (option=0, data=0x7f42527ae9b0, key=<optimized out>) at rb-ext-db-key.c:512
 rb_ext_db_key_to_store_key (key=<optimized out>) at rb-ext-db-key.c:599
 do_store_request (result=0x7f4268b930c0, object=<optimized out>, cancel=<optimized out>) at rb-ext-db.c:793
 run_in_thread (job=<optimized out>, c=0x0, _data=0x7f426805e120) at /build/buildd/glib2.0-2.31.8/./gio/gsimpleasyncresult.c:838
 io_job_thread (data=0x7f42685da950, user_data=<optimized out>) at /build/buildd/glib2.0-2.31.8/./gio/gioscheduler.c:177